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LCM of 261, 720, 640, 443

Created By : Jatin Gogia
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023


Find the LCM of 261, 720, 640, 443 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 261, 720, 640, 443. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 261,720,640,443

Given numbers are 261,720,640,443

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 261,720,640,443 is 73998720.

Find LCM of 261,720,640,443 with Prime Factorization


2 261, 720, 640, 443
2 261, 360, 320, 443
2 261, 180, 160, 443
2 261, 90, 80, 443
3 261, 45, 40, 443
3 87, 15, 40, 443
5 29, 5, 40, 443
29, 1, 8, 443

Multiply the prime numbers at the bottom and the left side.

2 x 2 x 2 x 2 x 3 x 3 x 5 x 29 x 1 x 8 x 443 = 73998720

Therefore, the lowest common multiple of 261,720,640,443 is 73998720.

LCM Formula to Find Lowest Common Multiple of 261,720,640,443

LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

Firstly, we have to find the product of all the numbers.

261 x 720 x 640 x 443 = 53279078400

Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.

261 : 1, 3, 9, 29, 87, 261

720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

443 : 1, 443

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 261,720,640,443, is 1.

Now, the common factors can be found like this.

261:3x 3x 29

720:2x 2x 2x 2x 3x 3x 5

640:2x 2x 2x 2x 2x 2x 2x 5

443:443

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2x 2x 2x 2x 3x 3x 5 = 720

Therefore, the value for common factors is 720.

Now that we have all the elements of the formula, we can plug them in to calculate the LCM.

LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

LCM = 53279078400/(1x720)

LCM = 53279078400/720

LCM = 73998720

Thus, we can understand that the LCM of 261,720,640,443 is 73998720.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 261, 720, 640, 443

1. What is the LCM of 261, 720, 640, 443?

Answer: LCM of 261, 720, 640, 443 is 73998720.

2. How to calculate the LCM of 261, 720, 640, 443?

The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 261, 720, 640, 443.

3. What is the LCM formula?

The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.